Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Jul. 29, 2012	Jan. 29, 2012	Jul. 31, 2011
Condensed Consolidated Balance Sheets [Abstract]
Preferred stock, par value	$ 0.0001	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	10,000	10,000	10,000
Preferred stock, shares issued
Preferred stock, shares outstanding
Common stock, par value	$ 0.0001	$ 0.0001	$ 0.0001
Common stock, shares authorized	625,000	625,000	625,000
Common stock, shares issued	166,607	164,801	163,748
Treasury stock, shares	58,464	54,686	51,003